National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fog/Mist

42°F

6°C

Humidity 100%
Wind Speed SW 6 mph
Barometer 30.01 in (1016.3 mb)
Dewpoint 42°F (6°C)
Visibility 0.75 mi
Wind Chill38°F (3°C)
Last update 10 Mar 9:56 pm EDT
Extended Forecast for

South Dennis MA

  • Tonight

    Tonight: Patchy fog between midnight and 1am. Otherwise, mostly cloudy, with a low around 37. Light southwest wind.

    Low: 37 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 45. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 45 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A slight chance of rain between 9pm and 10pm, then a chance of rain and thunderstorms after 10pm. Cloudy, with a low around 45. South wind 7 to 10 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

    Low: 45 °F

    Chance Rain

  • Thursday

    Thursday: Rain, mainly after 10am. High near 49. Southwest wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 49 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly before 8pm. Partly cloudy, with a low around 28. West wind around 8 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    Low: 28 °F

    Rain Likely
    then Mostly
    Clear

  • Friday

    Friday: Mostly sunny, with a high near 42. West wind 6 to 10 mph becoming southwest in the afternoon.

    High: 42 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of rain after 10pm. Mostly cloudy, with a low around 33. South wind 8 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    Low: 33 °F

    Chance Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 45. West wind 11 to 13 mph, with gusts as high as 24 mph.

    High: 45 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 29. Northwest wind 5 to 7 mph.

    Low: 29 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog between midnight and 1am. Otherwise, mostly cloudy, with a low around 37. Light southwest wind.
Wednesday
Mostly cloudy, with a high near 45. Calm wind becoming south 5 to 7 mph in the afternoon.
Wednesday Night
A slight chance of rain between 9pm and 10pm, then a chance of rain and thunderstorms after 10pm. Cloudy, with a low around 45. South wind 7 to 10 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Thursday
Rain, mainly after 10am. High near 49. Southwest wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Rain likely, mainly before 8pm. Partly cloudy, with a low around 28. West wind around 8 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 42. West wind 6 to 10 mph becoming southwest in the afternoon.
Friday Night
A chance of rain after 10pm. Mostly cloudy, with a low around 33. South wind 8 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 45. West wind 11 to 13 mph, with gusts as high as 24 mph.
Saturday Night
Partly cloudy, with a low around 29. Northwest wind 5 to 7 mph.
Sunday
Mostly cloudy, with a high near 46. North wind 5 to 8 mph becoming southeast in the afternoon.
Sunday Night
Rain likely. Cloudy, with a low around 37. South wind 8 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Monday
Rain. High near 51. South wind 14 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 90%.
Monday Night
Rain likely. Mostly cloudy, with a low around 27. Southwest wind around 10 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 60%.
Tuesday
A chance of rain. Partly sunny, with a high near 37. West wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
10:45 pm EDT Mar 10, 2026
Forecast Valid:
10pm EDT Mar 10, 2026-6pm EDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation